Original Research

Long distance dispersal, overland migration and extinction in the shaping of tropical African floras

F. White
Bothalia | Vol 14, No 2 | a1184 | DOI: https://doi.org/10.4102/abc.v14i2.1184 | © 1983 F. White | This work is licensed under CC Attribution 4.0
Submitted: 31 October 1983 | Published: 17 December 1983

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F. White, Department of Botany and Department of Agricultural and Forest Sciences, University of Oxford, South Africa

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Abstract

The distribution, ecology, probable modes of dispersal and taxonomic relationships of five species of Chrysobalanaceae and one of Meliaceae and Hernandiaceae are summarized. Most of these show trans-oceanic disjunctions and, in Africa, behave as ecological and chorological transgressors; morphologically they are variable. The potential importance of transgressors in the origin of new species and of evolutionary innovations, and in the interpretation of disjunctions is discussed.


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